AS13037 Zen Internet Ltd

United Kingdom ZEN-AS RIPE 37 IPv4 prefixes 1 IPv6 prefix

IPv4 addresses

527,616

IPv6 /48 networks

524,288

RPKI

31 valid7 no ROA

Peers and downstreams

Holder

AS name: ZEN-AS
Description: Zen Internet - UK GB
Organisation: Zen Internet Ltd
Registered in: Rochdale, United Kingdom
Abuse contact: abuse@zen.co.uk
Assigned: 2000-02-24
Registered: 2002-09-20
Record last changed: 2023-08-02 10:24 UTC

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade A · 90/100

partly	Prefixes covered by valid ROAs 31 of 38 announced prefixes are RPKI valid, 7 have no ROA.	20/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 1 IPv6 prefix.	15/15
pass	More than one upstream 13 upstreams seen in BGP.	10/10
pass	Working abuse contact abuse@zen.co.uk is published.	15/15
pass	Publishes a geofeed A geofeed (RFC 8805) tells where the address space is used.	10/10
pass	No prefixes smaller than /24 or /48 All prefixes are /24 (IPv4) or /48 (IPv6) or larger.	10/10
fail	Registry record maintained Last changed 2023-08-02.	0/5

Built from the announced prefixes, RPKI, the registry record and geofeeds. Checks without data are not counted. Also in the API.

Show this on your website

HTML

<a href="https://ip-fd.net/asn/13037"><img src="https://ip-fd.net/badge/asn/13037/health.svg" alt="AS13037 network health on IP-FD.net"></a>

Markdown

[![AS13037 network health](https://ip-fd.net/badge/asn/13037/health.svg)](https://ip-fd.net/asn/13037)

Use rpki.svg instead of health.svg for the RPKI badge.

Routing changes

Last 30 days

2026-10-04 18:52 UTC	Neighbour gone	AS137409	upstream
2026-10-04 18:52 UTC	Neighbour gone	AS7575	upstream
2026-10-04 18:52 UTC	Relationship changed	AS9044	upstream to peer
2026-10-04 18:52 UTC	Relationship changed	AS8966	upstream to peer
2026-10-04 18:52 UTC	Relationship changed	AS8943	upstream to peer
2026-10-04 18:52 UTC	Relationship changed	AS8455	upstream to peer
2026-10-04 18:52 UTC	Relationship changed	AS7195	upstream to peer
2026-10-04 18:52 UTC	Relationship changed	AS6663	upstream to peer
2026-10-04 18:52 UTC	Relationship changed	AS61049	upstream to peer
2026-10-04 18:52 UTC	Relationship changed	AS4455	upstream to peer
2026-10-04 18:52 UTC	Relationship changed	AS42708	upstream to peer
2026-10-04 18:52 UTC	Relationship changed	AS41327	upstream to peer
2026-10-04 18:52 UTC	Relationship changed	AS3741	upstream to peer
2026-10-04 18:52 UTC	Relationship changed	AS31500	upstream to peer
2026-10-04 18:52 UTC	Relationship changed	AS2856	upstream to peer
2026-10-04 18:52 UTC	Relationship changed	AS264409	upstream to peer
2026-10-04 18:52 UTC	Relationship changed	AS215638	upstream to peer
2026-10-04 18:52 UTC	Relationship changed	AS15802	upstream to peer
2026-10-04 18:52 UTC	Relationship changed	AS15412	upstream to peer
2026-10-04 18:52 UTC	Relationship changed	AS1267	upstream to peer
2026-10-04 18:52 UTC	Relationship changed	AS12552	upstream to peer

WHOIS

aut-num:        AS13037
as-name:        ZEN-AS
descr:          Zen Internet - UK
descr:          GB
org:            ORG-ZIL1-RIPE
remarks:        --
remarks:        -- Transit
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remarks:        --
remarks:        -- IXP Collectors
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remarks:        --
admin-c:        RT1337-RIPE
tech-c:         BC8726-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
remarks:        . ====================================================
remarks:        .
remarks:        . AS13037 is present at:
remarks:        .
remarks:        . IX Manchester http://www.linx.net/
remarks:        . LINX http://www.linx.net/
remarks:        . LoNAP http://www.lonap.net/
remarks:        .
remarks:        . Transit and co-location available at:
remarks:        .
remarks:        . Rochdale
remarks:        . Manchester Telecity
remarks:        . London Telehouse Docklands
remarks:        . Interxion
remarks:        .
remarks:        . Enquiries:
remarks:        .
remarks:        . transit: solutionsales@zen.co.uk
remarks:        . peering: peering@zen.net.uk
remarks:        .
remarks:        . Network Abuse Report: abuse@zen.co.uk
remarks:        .
remarks:        . ====================================================
mnt-by:         ZEN-MNT
created:        2002-09-20T15:36:24Z
last-modified:  2023-08-02T10:24:16Z
source:         RIPE
% 1450 routing policy lines (import/export) not shown

Routing data

Updated just now

Registry record

Fetched just now from RIPE

Prefixes and neighbours come from the RIPE RIS route collectors. Data older than 5 minutes is refreshed when this page is opened.

API

curl -H "X-API-Key: YOUR_KEY" https://ip-fd.net/api/v1/asn/13037

const res = await fetch('https://ip-fd.net/api/v1/asn/13037', {
  headers: { 'X-API-Key': 'YOUR_KEY' }
});
const data = await res.json();
console.log(data);

import requests

r = requests.get('https://ip-fd.net/api/v1/asn/13037', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/13037');
curl_setopt($ch, CURLOPT_HTTPHEADER, ['X-API-Key: YOUR_KEY']);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$data = json_decode(curl_exec($ch), true);
print_r($data);

req, _ := http.NewRequest("GET", "https://ip-fd.net/api/v1/asn/13037", nil)
req.Header.Set("X-API-Key", "YOUR_KEY")
res, err := http.DefaultClient.Do(req)
if err != nil {
    log.Fatal(err)
}
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))

Works without a key at a lower rate. Get a free key.

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